Compared to the preview it seems the retail model is running a bit under the 6W tdp in tablet mode: http://ultrabooknews.com/2013/02/21/amd-turbo-dock-teaser-and-temash-performance-figures/
That or Acer's implementation lacks some of the oomph of AMD's reference design.
6W is wrong. Only Temash has 5,9W but you can't couple it with the "docking station" and increase the clocks. The lowest Kabini version has 8W and is going up to 14w in the tablet mode.